4. Which statement most accurately describes the MAIN idea of Johnson's speech? (1 point)
A. The population of America is aging rapidly; it is imperative for younger people to take responsibility for addressing social issues.
B. Every American citizen should have a right to work; a great society would improve jobs and education for all people.
C. Older Americans are generally well off; younger people should enlist their help in addressing problem like poverty and illiteracy.
D. America's young people are a large part of the country's population; they will be instrumental in deciding its future.